Andreia Sofia Teixeira is an Associate Professor at the Network Science Institute, Northeastern University London, and Visiting Academic at Kent and Medway Medical School. She leads the BRAN Lab, an interdisciplinary group studying how cognitive-affective patterns evolve and propagate across scales, from individual mental representations to collective social dynamics, with focus on understanding how these structures shape mental health and behavior.

She develops computational models linking individual cognitive–emotional processes with group-level organization, drawing on multimodal behavioral and health data, network science, and machine learning, with applications to computational social science and human–AI interaction.

Her research includes network neuroscience (brain connectivity), computational psychiatry (suicide ideation, mental health trajectories), computational social science (polarization, equilibrium dynamics), and computational epidemiology (HIV prevention, disease outbreaks). Current work focuses on longitudinal social network analysis, social environment effects on adolescent mental health and brain network organization, spillover effects from human-AI interactions, and data-driven methods for health systems and improvement of PrEP policies for MSM.